演示一下12c中关于pdb的listener register,unregister问题
[oracle@db-42 ~]$ lsnrctl status listener1 LSNRCTL for Linux: Version 12.1.0.1.0 - Production on[......]
Category: network
Logon Storm
A Logon storm is a sudden spike in the number of client connection requests. Logon storms can occur due to a variety of factors. They could be malic[……]
11gR2 RAC listener
oracle 11gR2 rac listener引入了3项主要的改变：
1. listener默认owner为grid
[oracle@db-42 ~]$ srvctl config listener
Name: LISTENER
Network: 1, Owner: grid[……]
Problem : Fatal NI Connect Error 12170, ‘TNS-12535: TNS:operation timed out’ Reported in 11g Alert Log
Applies to:
Oracle Net Services – Version: 11.1.0.6 to 11.2.0.2 – Release: 11.1 to 11.2
Oracle Server – Enterprise Edition – Version: 11.1.0.6 to[……]
sqlnet.ora 控制访问IP
sqlnet.ora中进行下列参数的设置可以限制或允许用户从特定的客户机连接到数据库中
[root@Hong ~]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:0C:29:24:93:F5
inet addr:192.168.1.[……]